package com.desgin.observer;

import java.util.ArrayList;

public class WeatherData implements Subject{

    private ArrayList observers;
    private float temperature;
    private float humidity;
    private float pressure;

    public WeatherData(){
        observers = new ArrayList();
    }

    @Override
    public void registerObserver(Observer o) {
        observers.add(o);
    }

    @Override
    public void removeObserver(Observer o) {
        int i = observers.indexOf(o);
        if (i>0) {
            observers.remove(o);
        }
    }

    @Override
    public void notifyObservers() {
        for (int i = 0; i < observers.size(); i++) {
            Observer observer = (Observer) observers.get(i);
            observer.update(temperature,humidity,pressure);
        }
    }

    public void meansurementsChanged(){
        notifyObservers();
    }

    public void setMeansurements(float temperature,float humidity,float pressure){
        this.temperature = temperature;
        this.humidity = humidity;
        this.pressure = pressure;
        meansurementsChanged();
    }

    public ArrayList getObservers() {
        return observers;
    }
}
